Exercise frame



FIG. 1 is a front and left side perspective view of my new design for an exercise frame;

FIG. 2 is a side view of my new design for an exercise frame;

FIG. 3 is a top plan view of my new design for an exercise frame;

FIG. 4 is the other side view of my new design for an exercise frame;

FIG. 5 is the rear view of my new design for an exercise frame; and,

FIG. 6 is a front view of my new design for an exercise frame. 

The ornamental design for an exercise frame, as shown. 